Own the lifetime.

Treat ownership as part of the API

Every subscription, native resource and long-lived model needs an owner. A shared document can outlive its view; an ephemeral editor should not keep a background stream alive after navigation.

Reactive subscriptions

const subscription = cache.connect().pipe(
  filter(predicate$),
  bind(render)
).subscribe();

// On teardown, in owner order:
subscription.unsubscribe();
predicate$.complete();
cache.dispose();

Native graphics

Use try/finally around owned Skia paints, paths, images and surfaces. A JavaScript object becoming unreachable is not a promise of immediate native memory release.

const paint = new S.SKPaint({ IsAntialias: true });
try {
  surface.Canvas.DrawCircle(80, 80, 40, paint);
} finally {
  paint.Dispose();
}

Borrowed models

A DrawingControl does not dispose a supplied engine. Release the control first, then the application-owned engine when no other consumer needs it. Dockyard can retain DOM content while moving it, so a pane move is not an application teardown.

Playground lifetimes

Each run creates a fresh sandboxed frame. Old frames, event loops and documents are discarded. In a production application, implement the library’s documented disposal contract instead of relying on whole-page replacement.

Component APIs and compatibility boundaries are documented in their upstream repositories. Each component page links to its own source and guide.